[CodeGen] Unify MBB reference format in both MIR and debug output

As part of the unification of the debug format and the MIR format, print
MBB references as '%bb.5'.

The MIR printer prints the IR name of a MBB only for block definitions.

* find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)->getNumber\(\)/" << printMBBReference(*\1)/g'
* find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)\.getNumber\(\)/" << printMBBReference(\1)/g'
* find . \( -name "*.txt" -o -name "*.s" -o -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#([0-9]+)/%bb.\1/g'
* grep -nr 'BB#' and fix

Differential Revision: https://reviews.llvm.org/D40422

llvm-svn: 319665
diff --git a/llvm/test/CodeGen/ARM/negate-i1.ll b/llvm/test/CodeGen/ARM/negate-i1.ll
index 0503763..493b26a 100644
--- a/llvm/test/CodeGen/ARM/negate-i1.ll
+++ b/llvm/test/CodeGen/ARM/negate-i1.ll
@@ -4,7 +4,7 @@
 
 define i32 @select_i32_neg1_or_0(i1 %a) {
 ; CHECK-LABEL: select_i32_neg1_or_0:
-; CHECK-NEXT:  @ BB#0:
+; CHECK-NEXT:  @ %bb.0:
 ; CHECK-NEXT:    and r0, r0, #1
 ; CHECK-NEXT:    rsb r0, r0, #0
 ; CHECK-NEXT:    mov pc, lr
@@ -15,7 +15,7 @@
 
 define i32 @select_i32_neg1_or_0_zeroext(i1 zeroext %a) {
 ; CHECK-LABEL: select_i32_neg1_or_0_zeroext:
-; CHECK-NEXT:  @ BB#0:
+; CHECK-NEXT:  @ %bb.0:
 ; CHECK-NEXT:    rsb r0, r0, #0
 ; CHECK-NEXT:    mov pc, lr
 ;